The sixth update for Obsidian's Project Eternity Kickstarter is a writeup by CTO Chris Jones on the engine they picked for the game, which is the same engine Wasteland 2 is using, Unity.
Unity enables small teams to be very productive. Unity has an amazing development environment that makes it very easy for programmers, artists and designers to work together to build great games. In a very short time we have already made great progress prototyping some of the core functionality for Project Eternity.
We do intend to use some of our in-house tools in conjunction with Unity where it makes sense, such as in the case of creating conversations and editing some of the RPG-specific game data. Unity makes it very easy to extend not only the game engine but the development tools as well, and we feel integrating some of the tools that have already proven effective on previous Obsidian games will get us off to a great start on the development of Project Eternity.
Unity also supports a wide range of target platforms. We knew that a likely request from the community was going to be support for Mac and Linux versions of the game, and we wanted to make sure we were in the best position to do that. While we could have ported Onyx, our internal engine technology, to those platforms, the time and effort required to do so would reduce the budget we have to make the game and result in less of the awesome gameplay and content our fans desire. Mac and Linux will still require time and effort from us to test, maintain and support but Unity gets us most of the way there. In fact, our experience with Unity so far has made us confident enough that we have decided to remove Linux support from the stretch goals and just commit to providing a Linux version right here and now! Of course, we canâ€™t take something away from our stretch goals without putting something else in its place, so what is that going to be?